I just make my frist steps with Selenium. I successfully set up a test (Firefox driver), running on Selenium grid on my Jenkins (using Jenkins-Selenium-Grid plugin). I also
I asked the same question in selenium group:
https://groups.google.com/forum/?fromgroups#!topic/selenium-users/-3LJ3wma3RE
the solution provided there didn't work for me but probably it works for you? (set PATH for chromedriver on jenkins)